PROSPECTUS SUPPLEMENT -- JUNE 3, 2010

FUND (PROSPECTUS EFFECTIVE DATE)                                 MATERIAL NUMBER
Tri-Continental Corporation (May 1, 2010)                           SL-9912-99 A

Effective July 3, 2010, the following changes are hereby made to the Fund's
prospectus:

The description of the portfolio managers responsible for the Fund's day-to-day
portfolio management, as described under the caption "Portfolio Managers" in the
Management of the Corporation section is superseded and replaced with the
following:

Portfolio Manager. The portfolio manager responsible for the Corporation's
day-to-day management is:

Brian M. Condon, Portfolio Manager

-    Managed the Fund since May 2010.

-    Joined the investment manager in May 2010 when it acquired the long-term
     asset management business of Columbia Management Group, where he worked as
     an investment professional since 1999.

-    Began investment career in 1993.

-    BA from Bryant College and MS in finance from Bentley College.

The rest of the section remains unchanged.

                                                              SL-9912-5 A (6/10)